Drawing-bait for window-glass machinery.



P. 1. PAQUET. DRAWING BAITFOR WINDDW GLASSMACHINERY.

AAPPLICATIONy FILED AUG. 3, 1915.

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Specication of Letters Patent.

ljatented dan; iid, lllllilft;

application inea august a, 1915. seran Nol 43,383.

the molten glass and which thereafter, dur-v 15 ing the blowing' of the glass, forms the head of the cylinder, andrommunicates with the interior of such cylinder so as to provide for the introduction of air to the cylinder continuously during the blowing operation.

Cold baits, the'nature of which may he generally understood from the above, are nowconstituted by a substantially circular body plate having a central aperture from which rises a pipe, the upper end of which pipe connects with the air supply pipe of the drawing machinery when. the bait is disposed in operative position, upon the yertiJ' cally movable cage which forms part of suoli drawing machinery. From the edge of this plate a ang'e depends, the lower end of `such flange being inwardly inclined and having surrounding inwardly projecting bead forming a collecting ring', on which the collar at the extremel upper end of the cylinder is formed when the bait ,is lowered intomand'drawnout of the molten glass. lThese baits are open to the serious objection, however, of sudden unequal cooling and con-L sequent contraction after more or less eX- .pansion when lowered into the hot glass, and it is the primary object of my invention therefore to provide improvements remedying these objections and obviating the disadvantages resulting therefrom such as frequent checking of the glass andnot infrequent loss oi an entire cylinder'. The means employedby me for this purpose will be now described with reference to the accompanying drawings, which form 'apart of this specification` and in which liigure l is a. vertical substantially central section talren through the cold bait constitilting my invention, showing the parts in the position they will assume when the bait is initially lowered into the moltenv glass. Fig. 2 is a similar view illustrating the bait 0r head end of' a cylinder illustrating the` parts 1n the and the upper drawn thereby,

position they will assume when the bait has v been drawn above thele'vel of the molten glass. Fig'. 3 is a side elevation of a frag mentary lower portion 4of the bait pipe.

Fig. e is a transverse section therethrough taken substantidlly on line 1l-4 otig. l. Fig. 5 is a view similar to Fig. l, with the upper portion of the bait pipe broken away, and illustrating a slightly modified` form of body ot the bait itself. f

Referring now to these figures, my inventionl contemplates providing the bait pipe A. with an internal vertically adjustable tube B, and with a vertically disposed slot a adjacent its lower end, at which point it is con nected to the circular plate Cv of the bait, the upper ,end oii'whieh vertically disposed slot o. is provided 1with an angular extensionv slotv a, forming,` sul'istantially what is known as a bayonet slot, "and receiving an out! wardly projexiting stud the inner. end

which is rigidly connected to the inner tube B justv before mentioned. This stud may have a handle o by which it may be readily manipulated and adjusted to the `upper and lower positions respectively shownvin Figs. 1 and 2.

In the upper position of the inner adjust able tube B, the bait is ready'to be lowered into the molten glass, and as soon as the collar has formed around the collecting ring of the bait to be hereinafter mentioned, and thfe bait itself. is above the level of the molten glass. the inner tube B is lowered in order that the relatively cool air entering through the bait pipe A will be directed into the cylinder being formed at a'. point below the level of the collar of the cylinder as will be plainly seen by reference to Fig. 2.

ln addition to the circular late C, through which the lower end ot' the ait pipe A communicates, thev bait includes a. .sur-` rounding flange D, depending from the outer edge of the plate C and either formed detachable in connection therewith as illusv trated in Figs. l and 2, or integral as shown lOl? in Fig. 5, in which latter ligure the circularY MP5 plate forming the body or the bait isA indi cated at C and the flange is indicated at D'.

ln either form, however, the lower inwardly ,inclined edge oi' the ilange oit thebait 1s pirovided with a'collectinp,` ring indicated atl2,

Land in accordane with, my invention this collecting; ring is iorroed hollow, its here lill,

providing an annular' space in which heated air may circulateand thus maintain the collecting ring at substantially a uniformv temperature throughout the operation,y The iange outer nlpples F and G respectively, the upper ends of whichare open andthe lower,

ends of which connnunicaterwith the space E of the hollow collecting ring E, so as to create a circulation of the inner heated air of the bait through its hollow ring E and out through the exteriory nipple G. In this -way the temperature of the collecting ring, and the adjacent parts of the bait to which the collar of the cylinder adheres, may be kept substantially uniform throughout the drawing operation, and sudden and unequal chilling eifectively prevented, particularly in View ofthe adjustable tube Bwhich when lowered to the posi-tion shown in Fig. Q'effectively prevents Contact of the incoming l somewhat cool air through the bait pipe A with the collar of the cylinder indicated at H in Fig. 2.

I claim 1. A drawing bait for window glass inachinery having a lower collecting ring and an upper pipe, .and a vertically adjustable interior tube within and carried by said pipe and having a limited movement with respect thereto, which tube, when in lowered position, protects the collecting ring from direct action of air from the lower end of the said pipe.

2. A drawing bait for window glass machinery .having a lower collecting ring, an an upper'pipe provided with a vertically adjustable interior tube which, when in lowered position, protects the collecting ring from directA action of air from the lower end of the said pipe, and coperating means carried by said pipe and said tube for sup- I Copies of this patent may be obtained Afor ve cents each,`rby addressingrthe' Commissioner -of Patents,

n' Washington, D. C.

D is also provided with inner and' porting saidi tube in upper and lower positions.

3.k A drawing bait for window glass machinery having a lower collecting ring 'and an upperpipe provided withva vertically adjustable interior tube which, when in lowered position, yprotects the collecting ring from direct action of air from the lower end of the said pipe, said pipe having a bayonet slot and said tube having a stud projecting `exteriorly .through said pipe slot whereby to support the tube inv upper and lower positions. n

A drawing bait for window glass machinery having a hollow lower collecting ring, the space within which communicates with both the interior and exterior of the bait. l L

A drawing bait fory window glass inachinery having a hollow lower collecting ring, and a nipple 'communicating with the hollow of the ring and the interior of the i bait above the ring.

ends of which are in communication with -the space within the collecting ring.

.7; A drawing bait for window glass machinery having al lower collecting ring and an upperpipe, and a tube carried by, and

. within the lowerfportion of, said pipe and having limited movement with respect thered [to and in the directionof its length to mainltain its lower end at points above and below the said collecting ring. c

IERRE J. PAQUET.k

Witnesses:

T. F. OCONNELL, 'HENRY BozzAN. 

